The portrayal is a little sexist but what it does is support the very sexist mindsets within nerd culture. I've read some interesting articles on women and nerd cultures and I started noticing some of the sexism and misogyny in the general nerd culture.

It's sex, not sexist. Spend two minutes flicking through a female-demographic magazine or take a glance at any boy-band and you'll see much the same; both sexes have sexual desires and fantasies and they make for fantastic marketing bases.